For car dealer to repo car do they have to give me repo papers?

Doesn't a car dealer who repos my son's car should give me repo paper? Dealer in Pomano beach took car put in back on their lot and does not want to give me repo papers so I can give insurance company to cancel my insurance, and get refund. Please someone help me. 2 days after buying insurance they picked up car and when I called they said it was reposessed. Then I called them again to ask where was the car taken to get things they say the repo company had no space in their wherhouse so they took it back to dealer and to go there to pick up stuff in car for $250.00 and so my son went and paid and got stuff and then they did not give him letter he asked for. The car was under his name but I made the insurance payments under my name. Anyways it has been almost a month and still they do not want to give me letter that says the car was repossed. I suspect ther was no repo company and that they picked it up and now are avoiding to give my son or me letter that I so much need to get insurance refund.. The name of this car dealer is Dixie Cars on federal hwy and they sell used cars and my son from the begining had problems with the car and they did not want to repair it properly either and they charge too much that's why I told my son to forget the car, but I want my Insurance money back. I have tried everything and even insurance guy called them and nothing. They faxed him a paper that says nothing. Since the day the picked it up they should of gave us a repo paper, that says why it was reposessed and what kind of car and the name on car, etc, right???